feat(api): MCP, OpenAPI & Dynamic Introspection

New Features:
- API endpoints now support comprehensive input validation with detailed error responses via Pydantic models.
- OpenAPI specification endpoint (/openapi.json) and interactive Swagger UI documentation (/docs) now available for API discovery.
- Enhanced MCP session lifecycle management with create, retrieve, and delete operations.
- Network diagnostic tools: traceroute, nslookup, NMAP scanning, and network topology viewing exposed via API.
- Device search, filtering by status (including 'offline'), and bulk operations (copy, delete, update).
- Wake-on-LAN functionality for remote device management.
- Added dynamic tool disablement and status reporting.

Bug Fixes:
- Fixed get_tools_status in registry to correctly return boolean values instead of None for enabled tools.
- Improved error handling for invalid API inputs with standardized validation responses.
- Fixed OPTIONS request handling for cross-origin requests.

Refactoring:
- Significant refactoring of api_server_start.py to use decorator-based validation (@validate_request).

server/db/db_helper.py

@@ -39,6 +39,7 @@ def get_device_condition_by_status(device_status):
         "favorites": "WHERE devIsArchived=0 AND devFavorite=1",
         "new": "WHERE devIsArchived=0 AND devIsNew=1",
         "down": "WHERE devIsArchived=0 AND devAlertDown != 0 AND devPresentLastScan=0",
+        "offline": "WHERE devIsArchived=0 AND devPresentLastScan=0",
         "archived": "WHERE devIsArchived=1",
     }
     return conditions.get(device_status, "WHERE 1=0")
@@ -162,9 +163,8 @@ def print_table_schema(db, table):
         return
 
     mylog("debug", f"[Schema] Structure for table: {table}")
-    header = (
-        f"{'cid':<4} {'name':<20} {'type':<10} {'notnull':<8} {'default':<10} {'pk':<2}"
-    )
+    header = "{:<4} {:<20} {:<10} {:<8} {:<10} {:<2}".format(
+        "cid", "name", "type", "notnull", "default", "pk")
     mylog("debug", header)
     mylog("debug", "-" * len(header))